One of the coolest of names, thanks to legendary jazz pianist Thelonious Sphere Monk, who inherited this Latin-sounding German name from his father. It has been used very sparingly since the 1960's, with just a sprinkling of baby boys receiving the name each year, though it's one of the Unique-Baby-Names">unique baby names we predict will get much less unique as more parents embrace its quirky charms.

Monk's middle name Sphere is pretty unique too, a cousin of Cosmos and Cosmo.